fix CI

src/index.tsx

@@ -0,0 +1,10 @@
+import React from 'react';
+import ReactDOM from 'react-dom';
+import App from './App';
+
+ReactDOM.render(
+  <React.StrictMode>
+    <App />
+  </React.StrictMode>,
+  document.getElementById('root')
+);

tsconfig.json

@@ -0,0 +1,20 @@
+{
+    "compilerOptions": {
+      "target": "es5",
+      "lib": ["dom", "dom.iterable", "esnext"],
+      "allowJs": true,
+      "skipLibCheck": true,
+      "esModuleInterop": true,
+      "allowSyntheticDefaultImports": true,
+      "strict": true,
+      "forceConsistentCasingInFileNames": true,
+      "module": "esnext",
+      "moduleResolution": "node",
+      "resolveJsonModule": true,
+      "isolatedModules": true,
+      "noEmit": true,
+      "jsx": "react-jsx"
+    },
+    "include": ["src"]
+  }
+